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Fencer Vulns
high 8.6

CVE-2020-1745 json

Improper Authorization in Undertoe

published 2020-04-28 6 y ago modified 2026-06-17 4 mo ago also GHSA-gv2w-88hx-8m9r , EUVD-2022-4009

cvss
8.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
5.0%
EPSS 5.0% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

A file inclusion vulnerability was found in the AJP connector enabled with a default AJP configuration port of 8009 in Undertow version 2.0.29.Final and before and was fixed in 2.0.30.Final. A remote, unauthenticated attacker could exploit this vulnerability to read web application files from a vulnerable server. In instances where the vulnerable server allows file uploads, an attacker could upload malicious JavaServer Pages (JSP) code within a variety of file types and trigger this vulnerability to gain remote code execution.

Patch / fix

  • maven io.undertow:undertow-core 2.0.30
  • undertow Debian 14 2.0.30-1

debian advisories DEBIAN-CVE-2020-1745

  • eap7-txw2 jboss enterprise application platform 7.3 2.3.3-4.b02_redhat_00001.1.el7eap
  • eap7-xsom jboss enterprise application platform 7.3 2.3.3-4.b02_redhat_00001.1.el7eap
  • eap7-rngom jboss enterprise application platform 7.3 2.3.3-4.b02_redhat_00001.1.el7eap
  • eap7-wss4j jboss enterprise application platform 7.3, jboss enterprise application platform 7.2 2.2.5-1.redhat_00001.1.el7eap
  • eap7-jandex jboss enterprise application platform 7.3 2.1.2-1.Final_redhat_00001.1.el7eap
  • eap7-jasypt jboss enterprise application platform 7.3, jboss enterprise application platform 7.2 1.9.3-1.redhat_00001.1.el7eap
  • eap7-wildfly jboss enterprise application platform 7.3 7.3.1-5.GA_redhat_00003.1.el7eap
  • eap7-jaxb-jxc jboss enterprise application platform 7.3 2.3.3-4.b02_redhat_00001.1.el7eap

red hat advisories RHSA-2024:5856RHSA-2020:2512RHSA-2020:2511RHSA-2020:2513RHSA-2020:2060RHSA-2020:2059

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-1745 updated cvss 7.6

undertow: AJP File Read/Inclusion Vulnerability

  • Red Hat JBoss Fuse 6 undertow undertow
    affected: workaround, no fix planned “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251”
  • Red Hat OpenShift Application Runtimes undertow undertow
    affected: workaround, no fix available “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251”
  • Red Hat OpenStack Platform 13 (Queens) opendaylight
    affected: workaround, no fix planned “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251”
  • Red Hat Single Sign-On 7 undertow undertow
    affected: workaround, no fix available “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251”
  • Red Hat EAP-CD 19 Tech Preview
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:2333
  • Red Hat Data Grid 7.3.7
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:3779
  • Red Hat Fuse 7.7.0
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:3192
  • Red Hat JBoss EAP 7.2
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:0812
show 11 more
  • Red Hat JBoss EAP 7.2 for RHEL 6 Server eap7-wss4j 2.2.5-1.redhat_00001.1.el6eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el6eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el6eap, eap7-wildfly 7.2.8-3.GA_redhat_00002.1.el6eap, eap7-apache-cxf 3.2.12-1.redhat_00001.1.el6eap, eap7-cryptacular 1.2.4-1.redhat_00001.1.el6eap, +153 more
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:2058
  • Red Hat JBoss EAP 7.2 for RHEL 7 Server eap7-wss4j 2.2.5-1.redhat_00001.1.el7eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el7eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el7eap, eap7-wildfly 7.2.8-3.GA_redhat_00002.1.el7eap, eap7-apache-cxf 3.2.12-1.redhat_00001.1.el7eap, eap7-cryptacular 1.2.4-1.redhat_00001.1.el7eap, +155 more Red Hat JBoss EAP 7.2 for RHEL 8 eap7-wss4j 2.2.5-1.redhat_00001.1.el8eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el8eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el8eap, eap7-wildfly 7.2.8-3.GA_redhat_00002.1.el8eap, eap7-apache-cxf 3.2.12-1.redhat_00001.1.el8eap, eap7-cryptacular 1.2.4-1.redhat_00001.1.el8eap, +153 more
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:0813
  • Red Hat JBoss EAP 7.3 for BaseOS-8 eap7-wss4j 2.2.5-1.redhat_00001.1.el8eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el8eap, eap7-thrift 0.13.0-1.redhat_00002.1.el8eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el8eap, eap7-txw2 2.3.3-4.b02_redhat_00001.1.el8eap, eap7-xsom 2.3.3-4.b02_redhat_00001.1.el8eap, +202 more
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:0962
  • Red Hat JBoss EAP 7.3 for RHEL 6 Server eap7-wss4j 2.2.5-1.redhat_00001.1.el6eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el6eap, eap7-thrift 0.13.0-1.redhat_00002.1.el6eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el6eap, eap7-txw2 2.3.3-4.b02_redhat_00001.1.el6eap, eap7-xsom 2.3.3-4.b02_redhat_00001.1.el6eap, +202 more
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:2511
  • Red Hat JBoss EAP 7.3 for RHEL 7 Server eap7-wss4j 2.2.5-1.redhat_00001.1.el7eap, eap7-jasypt 1.9.3-1.redhat_00001.1.el7eap, eap7-thrift 0.13.0-1.redhat_00002.1.el7eap, eap7-opensaml 3.3.1-1.redhat_00002.1.el7eap, eap7-txw2 2.3.3-4.b02_redhat_00001.1.el7eap, eap7-xsom 2.3.3-4.b02_redhat_00001.1.el7eap, +204 more
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:0962
  • Red Hat JBoss Enterprise Application Platform 7
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:0961
  • Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 Server eap7-undertow 1.4.18-12.SP12_redhat_00001.1.ep7.el7
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2024:5856
  • Red Hat Runtimes Spring Boot 2.1.13
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:2367
  • Red Hat Single Sign On 7.3
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:0952
  • Red Hat Text-Only RHOAR
    fixed: vendor fix “Please refer to the Red Hat knowledgebase article: https://access.redhat.com/solutions/4851251” RHSA-2020:2905
  • Red Hat Decision Manager 7 undertow undertow Red Hat JBoss Enterprise Application Platform 7.1 EUS for RHEL 7 Server eap7-wildfly 7.1.7-2.GA_redhat_00002.1.ep7.el7, eap7-netty 4.1.45-1.Final_redhat_00001.1.ep7.el7, eap7-infinispan 8.2.11-1.SP2_redhat_00001.1.ep7.el7, eap7-netty-all 4.1.45-1.Final_redhat_00001.1.ep7.el7, eap7-wildfly-modules 7.1.7-2.GA_redhat_00002.1.ep7.el7, eap7-jackson-databind 2.8.11.5-1.redhat_00001.1.ep7.el7, +8 more Red Hat Process Automation 7 undertow undertow
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.96% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.0 8.6 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Affected packages

ecosystem package affected fixed in
maven io.undertow:undertow-core
<2.0.30
2.0.30

Affected products

  • undertow-io undertow

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.